linux-kernel - [PATCH v4 10/25] slab/slub: struct memcg

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Message-Id: <1340015298-14133-11-git-send-email-glommer@parallels.com>
Date:	Mon, 18 Jun 2012 14:28:03 +0400
From:	Glauber Costa <glommer@...allels.com>
To:	<linux-mm@...ck.org>
Cc:	Pekka Enberg <penberg@...nel.org>, Cristoph Lameter <cl@...ux.com>,
	David Rientjes <rientjes@...gle.com>,
	<cgroups@...r.kernel.org>, <devel@...nvz.org>,
	<kamezawa.hiroyu@...fujitsu.com>, <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Suleiman Souhlal <suleiman@...gle.com>,
	Glauber Costa <glommer@...allels.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>
Subject: [PATCH v4 10/25] slab/slub: struct memcg_params

For the kmem slab controller, we need to record some extra
information in the kmem_cache structure.

Signed-off-by: Glauber Costa <glommer@...allels.com>
Signed-off-by: Suleiman Souhlal <suleiman@...gle.com>
CC: Christoph Lameter <cl@...ux.com>
CC: Pekka Enberg <penberg@...helsinki.fi>
CC: Michal Hocko <mhocko@...e.cz>
CC: Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
CC: Johannes Weiner <hannes@...xchg.org>
---
 include/linux/slab.h     |    8 ++++++++
 include/linux/slab_def.h |    4 ++++
 include/linux/slub_def.h |    3 +++
 3 files changed, 15 insertions(+)

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 3c2181a..e007cc5 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -177,6 +177,14 @@ unsigned int kmem_cache_size(struct kmem_cache *);
 #define ARCH_SLAB_MINALIGN __alignof__(unsigned long long)
 #endif
 
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
+struct mem_cgroup_cache_params {
+	struct mem_cgroup *memcg;
+	int id;
+	atomic_t refcnt;
+};
+#endif
+
 /*
  * Common kmalloc functions provided by all allocators
  */
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 0c634fa..04ca5be 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -83,6 +83,10 @@ struct kmem_cache {
 	int obj_offset;
 #endif /* CONFIG_DEBUG_SLAB */
 
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
+	struct mem_cgroup_cache_params memcg_params;
+#endif
+
 /* 6) per-cpu/per-node data, touched during every alloc/free */
 	/*
 	 * We put array[] at the end of kmem_cache, because we want to size
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index df448ad..7637f3b 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -101,6 +101,9 @@ struct kmem_cache {
 #ifdef CONFIG_SYSFS
 	struct kobject kobj;	/* For sysfs */
 #endif
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
+	struct mem_cgroup_cache_params memcg_params;
+#endif
 
 #ifdef CONFIG_NUMA
 	/*
-- 
1.7.10.2

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